Our Physicians

Leslie Grosinger, M.D., F.A.C.S., Medical Director

As founder of Grosinger, Spigelman & Grey Eye Surgeons in 1990, Dr. Grosinger has made it his professional goal to be on the cutting edge of laser refractive and cataract surgery. He has been voted by his peers to be one of Michigan’s top eye surgeons on several occasions. He has most recently been called upon to be a lead investigator in the development of the ReSTOR intraocular lens, which improves upon conventional intraocular lenses by providing patients with close, intermediate, and distance vision. Dr. Grosinger currently holds fellowship positions in the American Academy of Ophthalmology and the American College of Surgeons. He is also a board member of the Michigan Ophthalmic Society and the Oakland County Medical Society. Dr. Grosinger serves as the Medical Director of the Eye Surgery Center of Michigan.

Alan Spigelman, M.D., F.A.C.S.

Dr. Spigelman has established a reputation as one of Michigan’s leading eye surgeons focusing on cataract, refractive and corneal surgery. He has written numerous articles on cataract surgery, intraocular lens implantation, and various laser correction techniques. Dr. Spigelman has served as an investigator in FDA trials of the VISX laser platform, a state-of-the-art excimer laser, in refractive surgeries and also the development of the ReSTOR intraocular lens. He was the recipient of the American Academy of Ophthalmology’s Honor Award in 1997. Dr. Spigelman has also been involved in teaching cataract surgery at the American Academy of Ophthalmology skills transfer courses.

David Grey, M.D., F.A.C.S.

Dr. David S. Grey has particular expertise in the treatment of cataracts and performs advanced no-stitch, small incision cataract surgery as well as laser refractive surgery. He is also highly accomplished in the diagnosis and treatment of glaucoma and diabetic eye disease. Dr. Grey was awarded the H. Sol Sugar Award for Resident of the Year in 1989. He also provides clinical instruction to resident physicians in ophthalmology in Southeastern Michigan. He currently holds a fellowship position in the American College of Surgeons. Dr. Grey is an active member of the American Association of Cataract and Refractive Surgeons, the American Academy of Ophthalmology, American Medical Association, and the Michigan State Medical Society.

Marc Siegel, M.D., F.A.C.S.

Marc J. Siegel, M.D. is an ophthalmologist who specializes in the surgery and medical treatment of glaucoma and cataracts.

A native Detroiter, Dr. Siegel received both his Bachelor of Science and M.D. from the University of Michigan with High Honors.

He completed a general surgery internship in Boston at Tufts New England Medical Center. He served his residency in ophthalmology at Mt. Sinai Medical Center in New York. Dr. Siegel then served as chief resident and completed his fellowship training for glaucoma surgery and medical treatment at Mt. Sinai as well. He received the Heed Foundation and Fight for Sight Fellowship Awards in Glaucoma.

Ryan Cosgrove, D.O.

Dr. Cosgrove specializes in comprehensive ophthalmology and the surgical treatment of cataracts. He graduated with honors from Albion College with a degree in biology and proceeded to obtain his medical degree at Michigan State University. He then completed his residency in ophthalmology at Ascension Macomb-Oakland Hospital affiliated with Michigan State University, where he served as co-chief resident. During this time he completed extensive research with other leading industry experts and authored multiple manuscripts on topics related to LASIK, neuro-ophthalmology and glaucoma. Dr. Cosgrove takes great pride in being an advocate for medical missions and has personally supported missions providing care in both Kenya and Cameroon. He is an active member in multiple professional organizations including the American Academy of Ophthalmology, the American Society of Cataract and Refractive Surgery, and the American Osteopathic Colleges of Ophthalmology and Otolaryngology – Head and Neck Surgery.

Sarah B. Muenk-Gold, M.D.

Dr. Muenk-Gold is a member of the Cataract and Eye Consultants of Michigan, which is committed to providing state-of-the-art eye care while treating the whole person. She earned her undergraduate degree at the University of Michigan. After attending Wayne State University School of Medicine, Dr. Muenk completed her internship at Sinai Grace Hospital in Detroit. She then completed her residency in Ophthalmology at the Kresge Eye Institute in Detroit.

Alan C. Parent, M.D., F.A.C.S.

Dr. Parent’s areas of expertise include small incision cataract lens implant surgery, laser refractive surgery (LASIK), diabetic eye diseases, glaucoma, macular degeneration, and cosmetic eyelid procedures. Dr. Parent graduated with honors from Wayne State University School of Medicine in 1997 and completed his surgical internship and ophthalmology residency at Rush University in Chicago. Dr. Parent is a Clinical Assistant Professor and Director of Surgical Education at the renowned Kresge Eye Institute. Here he teaches cataract surgery to ophthalmology residents. He joined Cataract & Eye Consultants of Michigan in 2001.

Les Siegel, M.D., F.A.C.S.

Les I Siegel, M.D. is the founder of the Glaucoma Center of Michigan, and is an ophthalmologist who specializes in consultation, treatment and surgery for glaucoma and cataracts.

Born in Detroit, Dr. Siegel attended Michigan State University where he graduated with High Honors while receiving his Bachelor of Science in Physiology. He then attended the Wayne State University School of Medicine where he received his M.D. with Honors.

Dr. Siegel has made numerous presentations and written various publications on diagnosis, treatment, and surgery pertaining to glaucoma and cataract-related subjects. He has a particular interest in combined cataract surgery with surgery including traditional glaucoma surgery, MIGS (minimally invasive glaucoma surgery), and ECP (endo-cyclo-photo-coagulation).

Matthew Citron, D.O., F.A.C.S.

Matthew E. Citron, D.O. is an ophthalmologist who specializes in surgery and medical treatment of glaucoma and cataracts.

A long-time Detroit area resident, Dr. Citron received a B.A. in History at the University of Michigan. He then achieved his Doctor of Osteopathic Medicine degree from Michigan State University with the honor of most outstanding surgical extern.

Dr. Citron is an Associate Professor of Ophthalmology at Michigan State University. Prior to joining the Glaucoma Center of Michigan, he was with the Wayne State University’s Kresge Eye Institute as an Assistant Professor of Ophthalmology and Local Residency Program Director in the Sinai-Grace Hospital facility. Dr. Citron has an extensive list of presentations and published abstracts including advancements in the sub-specialties of glaucoma and cataract surgery.

Michael J. Siegel, M.D.

A native of the Detroit area, he attended Michigan State University’s Honors College where he graduated cum laude with a Bachelor of Arts in History. Following a year of research at the Harvard Institute of Medicine in Boston, he received his M.D. from the Wayne State University School of Medicine in Detroit. He then completed his ophthalmology residency at Kresge Eye Institute/Wayne State University and a fellowship in glaucoma at Mt. Sinai Hospital in New York.

Dr. Siegel has edited and written articles for numerous peer-reviewed journals and made numerous presentations nationally. He has a special interest in resident education as well as in the complex surgery management of combined cataract and glaucoma issues. Along with his role at Glaucoma Center of Michigan, he is currently the co-chief of the glaucoma service at Oakland University/William Beaumont School of Medicine in the Department of Ophthalmology.

Dr. Faisal Ridha, M.D.

Dr. Faisal Ridha grew up in Cleveland, Ohio and graduated from the accelerated BS/MD program at Northeast Ohio Medical University. He then went on to perform his internship at St. Elizabeth Hospital in Youngstown, Ohio. From there, he went on to Ophthalmology residency at Howard University in Washington, D.C. where he served as Chief Resident. Following his residency, he completed his fellowship at Kresge Eye Institute in glaucoma and complex anterior segment pathology. After fellowship, Dr. Ridha spent three years as full-time faculty at the Kresge Eye Institute and served as the medical director of the midtown campus. There, he trained dozens of residents and fellows in cataract surgery and glaucoma.

He has a special interest in mentorship for medical students and residents, and continues to teach at several of the local residency programs in the Detroit area. Dr. Ridha is an Assistant Professor at Wayne State University, and is on the medical staff of Detroit Medical Center, Ascension-St. John Hospital, and the John Dingell Detroit VA Hospital. Dr. Ridha is board certified by the American Board of Ophthalmology, and is a member of the American Academy of Ophthalmology (AAO) and American Glaucoma Society (AGS). He has numerous publications and presentations focusing on medical and surgical glaucoma management. His interests include laser and surgical treatments for glaucoma and cataracts, including the latest minimally invasive options in the field.

Dana J. Greenberg, M.D.

Dana J. Greenberg, MD is a board-certified Ophthalmologist and advanced Customvue iLASIK specialist who graduated from Boston’s Brandeis University with a degree in Neuroscience and received her medical degree from Tufts University School of Medicine. After completing an internship at Boston’s Brigham and Women’s Faulkner Hospital, she completed her residency in Ophthalmology at Boston University Medical Center. Dr. Greenberg specializes in advanced Customvue iLASIK with Iris Registration, PRK, cataract surgery, treatments for glaucoma and diabetes, dry eye, and macular degeneration.

Daniel S. Kasprick, M.D.

Daniel S. Kasprick, M.D. is a comprehensive ophthalmologist who specializes in cataract and laser eye surgery. He received his medical degree from the University of Michigan and completed his residency training at the University of Michigan W.K. Kellogg Eye Center where he was elected to serve as chief resident. He spent one year as a Kellogg Eye Center faculty member at the University of Michigan with an active role in resident surgical training. He has a special interest in astigmatism correction and multifocal intraocular lenses and is committed to working closely with his patients to meet their unique vision goals. Dr. Kasprick started to practice in Rochester Hills in 2018 and in 2022 opened his own practice in Lake Orion. He has strong ties to the metro Detroit area as a former graduate of Troy Athens High School and Oakland University and he looks forward to helping take care of the community in which he was raised. He is an active member of the American Academy of Ophthalmology.

Shannon Joseph, M.D.

Dr. Shannon S. Joseph is a board-certified and subspecialty fellowship-trained oculofacial plastic surgeon who specializes in cosmetic and reconstructive surgery exclusively of the eyes and face. Dr. Joseph is a member of the prestigious American Society of Ophthalmic Plastic and Reconstructive Surgery.

Dr. Joseph received her Doctor of Medicine degree from the internationally renowned Johns Hopkins University School of Medicine. She was elected to the Phi Beta Kappa National Academic Honor Society and the Alpha Omega Alpha National Medical Honor Society. After completing her ophthalmology residency at the top-ranked Wilmer Eye Institute at the Johns Hopkins Hospital, Dr. Joseph then underwent intensive sub-specialty fellowship training in Oculofacial Plastic and Reconstructive Surgery at the University of Michigan.

After serving as an Assistant Professor at the Johns Hopkins Hospital Wilmer Eye Institute, Dr. Joseph returned to the University of Michigan Kellogg Eye Center and was promoted to Associate Professor. While on faculty at the University of Michigan, Dr. Joseph was selected to serve as the Medical Director of the University of Michigan Kellogg Eye Center Ambulatory Surgery Center and the Medical Director of the Division of Oculofacial Plastic Surgery. She also founded and co-directed the Michigan Medicine Multidisciplinary Facial Nerve Clinic at the University of Michigan.